pre-receive Code Sniffer

phpcs-git-hook-pre-receive.sh

#!/bin/sh
# PHP CodeSniffer pre-receive hook for git

PHPCS_BIN="/usr/local/bin/phpcs"
PHPCS_CODING_STANDARD="PSR2"
# use coding standard dir from local repo
PHPCS_DIR_LOCAL=0

TMP_DIR=$(mktemp -d --tmpdir phpcs-pre-receive-hook.XXXXXXXX)
mkdir "$TMP_DIR/source"

# parse config
CONFIG_FILE=$(dirname $0)/config
if [ -e $CONFIG_FILE ]; then
    . $CONFIG_FILE
fi

# simple check if code sniffer is set up correctly
if [ ! -x $PHPCS_BIN ]; then
echo "PHP CodeSniffer bin not found or executable -> $PHPCS_BIN"
    exit 1
fi

# prepare our standard rules
if [ $PHPCS_DIR_LOCAL = 1 ]; then
    mkdir "$TMP_DIR/standard"
    git archive HEAD $PHPCS_CODING_STANDARD | tar -x -C "$TMP_DIR/standard"
    PHPCS_CODING_STANDARD="$TMP_DIR/standard/$PHPCS_CODING_STANDARD"
fi

# gathers all errors and sent to output at end
ERRORS=""
RETVAL=0

EMPTY_REV="0000000000000000000000000000000000000000"

# <oldrev> <newrev> <refname>
i=0
while read oldrev newrev ref;
do
    if [ "$oldrev" = "$EMPTY_REV" ]; then  # create new branch
        oldrev="HEAD"
    fi

    if [ "$newrev" = "$EMPTY_REV" ]; then  # delete branch
        break
    fi

    list=$(git diff-tree --name-only -r $oldrev..$newrev | grep -e '.php')
    for file in ${list}; do
        # dirty hack for create dir tree
        mkdir -p $(dirname "$TMP_DIR/source/$file")

        git show ${newrev}:${file} 1>"$TMP_DIR/source/$file" 2>/dev/null  || continue  #skip deleted files
        OUTPUT=$($PHPCS_BIN --standard=$PHPCS_CODING_STANDARD -q -n --ignore=vendor,database,_ide_helper.php "$TMP_DIR/source/$file")

        if [ "$?" -ne "0" ]; then
            ERRORS="${ERRORS}${OUTPUT}"
            RETVAL=1

            ((i++));
            if (( i > 3 )); then  # only show errors of 3 files at most for performance
                break
            fi
        fi
    done
done

# cleanup
rm -rf $TMP_DIR

echo "$ERRORS"

exit $RETVAL